Position sensor system

Details Position sensor system Position sensor system

2006-02-06

2010-02-23

Masih, Karen (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S400160

Reexamination Certificate

active

07667420

ABSTRACT:
A position sensor system for detecting an absolute angular position of a rotor axle of an electric motor at a predetermined angular resolution W. The position sensor system include, a first Hall sensor device having a first sensor magnet set-up, set up on the rotor axle, and two first Hall sensors, which are set up at an angular offset with respect to the rotor axle so as to achieve a position angle resolution of 90°, and having a second sensor magnet set-up, set up on rotor axle, having n pole pairs and a number m of second Hall sensors, which are set up at an angular offset to one another with respect to the rotor axle, the set-up and the number n of pole pairs and the set-up and the number m of the second Hall sensors being selected so as clearly to detect angular segments at the predetermined angular resolution W within the angular range of the angular offset of 90°.

REFERENCES:
patent: 2006/0169093 (2006-08-01), Peniston et al.
patent: 100 54 530 (2002-02-01), None
“Power Thermal Function Generator”, Jan. 1, 1991, pp. 416-419, Vo. 33. No. 8, IBM Technical Disclosure Bulletin, IBM Corp., New York.

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